JP2015131878A - 仮固定用接着シート - Google Patents
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- JP2015131878A JP2015131878A JP2014002591A JP2014002591A JP2015131878A JP 2015131878 A JP2015131878 A JP 2015131878A JP 2014002591 A JP2014002591 A JP 2014002591A JP 2014002591 A JP2014002591 A JP 2014002591A JP 2015131878 A JP2015131878 A JP 2015131878A
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- Adhesives Or Adhesive Processes (AREA)
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Abstract
Description
一方、シリコンやガラス、セラミックス、磁性材料、結晶材料等の脆性材料で、インゴットや1mmを超える厚さの板状物を、スライシング、ダイシング、ポリシング、切削などの加工をする場合、上記の粘着テープでは、固定が弱く加工時にこれらの加工部材が剥離したり、動いたりしてしまうことで加工精度が低下する恐れがあった。そこでこれらの加工部材をしっかりと固定(仮固定)するためには、従来ビニル系樹脂、石油系樹脂、ワックス等の熱可塑性を有する接着剤や、エポキシ樹脂等の熱硬化系の接着剤が使用されてきた。前者の熱可塑性接着剤は、粉末若しくは固体の棒状で提供されており、加工部材を固定する台座(若しくは加工部材)を加熱し、その上で接着剤を融解して塗り拡げていき、加工部材(若しくは台座)を押し付けて密着させた後で冷却することで固定を行ってきた。また、後者の熱硬化系接着剤は、1液若しくは2液で提供され、液状の接着剤を台座若しくは加工部材に塗布して両者を貼り合せた後で、常温放置若しくは一定時間加熱することで接着剤が硬化し固定するものである。これらの接着剤で固定された加工部材は、所定の加工が済んだ後で、有機溶剤やアルカリ溶液、熱水等の特定の溶解液を使用して台座から離脱されることになる。
該加工部材の加工後に、該加工部材を該台座から剥離した後に溶解液で洗浄する、または溶解液により仮固定用接着シートを溶解せしめることで該加工部材を台座から離脱させる、のいずれかの加工方法に用いられることを特徴とする。
なお、本発明の仮固定用接着シートがこのような溶解液に溶解するためには、その組成物にも工夫が必要であり、例えばアルカリ水溶液に溶解するためには、熱可塑性樹脂やワックスなどにカルボン酸基やそのアルカリ金属塩を含有することが有効であり、また水や温水を溶解液とする場合は、上述のポリエチレングリコールのような水溶性化合物を含有することも可能である。
(1)台座の上に、仮固定用接着シートを載せ、台座を加熱することで接着シートを軟化、融解する。
(2)軟化、融解した接着シート上に加工部材を載せ、必要の応じて圧力を掛けて加工部材を台座に密着させる。
(3)これを冷却することで加工部材の台座への固定が完了する。
(4)加工部材に対して、所定の加工を実施する。
(5)加工済みの加工部材を台座ごと溶解液に浸漬し、加工部材を台座から離脱させる。
(6)離脱した加工部材を溶解液で洗浄し、乾燥する。
11・・・・・接着剤
12・・・・・芯材
13・・・・・剥離性の基材
Claims (6)
- 台座上に仮固定用接着シート、加工部材を順次積載し、積載の途中または積載後に加熱し、その後冷却して該加工部材を該台座に固定し、
該加工部材の加工後に、該加工部材を該台座から剥離した後に溶解液で洗浄する、または溶解液により仮固定用接着シートを溶解せしめることで該加工部材を台座から離脱させる、のいずれかの加工方法に用いられる、接着剤を主成分とする仮固定用接着シート。 - 前記接着剤が、熱可塑性樹脂またはワックスを含有する組成物からなることを特徴とする請求項1に記載の仮固定用接着シート。
- シート状の芯材を有することを特徴とする請求項1または2に記載の仮固定用接着シート。
- 前記芯材が多孔質材料であることを特徴とする請求項3に記載の仮固定用接着シート。
- 前記多孔質材料が織布若しくは不織布であることを特徴とする請求項4に記載の仮固定用接着シート。
- シート状の多孔質材料を少なくとも一方の面に密着させていることを特徴とする請求項1乃至5のいずれかに記載の仮固定用接着シート。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2020505623A (ja) * | 2017-01-25 | 2020-02-20 | 京東方科技集團股▲ふん▼有限公司Boe Technology Group Co.,Ltd. | フレキシブルディスプレイパネルおよびフィルム状構造 |
JP2020053656A (ja) * | 2018-09-28 | 2020-04-02 | Koa株式会社 | チップ部品の分割方法 |
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JP2013189622A (ja) * | 2012-02-17 | 2013-09-26 | Tokyo Ohka Kogyo Co Ltd | 接着剤組成物及び接着フィルム |
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JP2020505623A (ja) * | 2017-01-25 | 2020-02-20 | 京東方科技集團股▲ふん▼有限公司Boe Technology Group Co.,Ltd. | フレキシブルディスプレイパネルおよびフィルム状構造 |
JP7111287B2 (ja) | 2017-01-25 | 2022-08-02 | 京東方科技集團股▲ふん▼有限公司 | フレキシブルディスプレイパネル、その剛性/可撓性の切り替え制御方法、及びフィルム状構造 |
JP2020053656A (ja) * | 2018-09-28 | 2020-04-02 | Koa株式会社 | チップ部品の分割方法 |
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